Airtight drywall approach — very uneven top plates / studs
Hi, I have a question regarding the airtight drywall approach and very uneven top plates. We are currently gut remodeling a post-WW2 single-story Cape Cod.
One of the many issues I face is that the lumber used for the top plates is very uneven. The top plate is a full 2x4” with a 1x4” on the top. the studs are a full 4” wide but in places the top plates are only about 3.5” wide in some places. Also many of the studs require a great deal of shimming just to make the drywall flat.
When we removed the drywall there was a lot of various shims used including fiberboard, drywall, wood, etc.
I intend to use the Airtight Drywall Approach to help air-seal the house. I will be ordering Airfoil boxes for all the exterior wall boxes and ceiling fixtures. I wanted to check to see what must be done to the perimeter and top plates to use ADA. Iif shims must be added to the perimeter where gaskets will be applied what must be done to air seal between the shim and the stud / top plate??
Are there any tips or tricks to preparing uneven studs where gaskets should be placed for ADA?
Currently the attic floor joists are exposed. Would it be preferable to air seal the drywall to the top plate with cans of spray foam after the drywall is hung along with gaskets?
Posted Wed, 10/23/2013 - 06:52
Edited Wed, 10/23/2013 - 08:29
Other Questions in Green building techniques